i might swap them in a second. gas was pumped out after i blew it up. i needed gas for my street bike and was low on cash. i replaced it 2 weeks ago.

map sits right behind the fuel rail cross over

 

wish i could just call wheatley and have him confirm my tune just to double check.

 

well apparently a safe tune requires a map and a maf

 

Well, the PCM needs a way to measure airflow to properly control fueling.

 

What exactly do you mean?

 

Bottom line a DBC system will not run without a MAF.

 

wut???

 

Without tuning the MAF out the engine will start but immediatly stall.

 

My old setup ran with the MAF unplugged. It ran, but not so well. When the MAF information is missing, the PCM reverts to the engine airflow tables as discussed earlier. Now if these tables are not correct, the engine will not run.

Speed density tunes require no MAF. The computer is using hard airflow tables that are tweaked based on temperature and pressure (MAP sensor).

A non-speed density tune also uses these tables during transient operations such as acceleration where the MAF cannot provide enough information due to rapid changes.

The moral is: the airflow tables must be suitable for the actual air coming in or you will have an engine that idles poorly, stumbles or dies.

All of the above is referring to air. There may be a problem with fuelling as well, and it's a whole other can of worms. And there is also spark, but in general it shouldn't affect idle to a huge degree.

 

Why do you say that?